How to send email through the default user email client

Hi 

I am still struggling with this issue:

I have a list of product in my page, beside every product there is a button named 'Send to a friend'

i want when a user click on that button to open his default email client and throw a link of the product into the body of the new message

I am using standard 'mailto' html function, but it does not allow me to format the body of the message instaed it just throw the html code as it is.

not as html

i would be really appreciated if i can get any help

thank s

 
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